开始使用抗生素后的细菌阳性率:系统性审查和元分析
Annabel M Itaeli1, Petra E Joseph2, Bruno F Sunguya2
1Muhimbili University of Health and Allied Sciences, Dar Es Salaam, United Republic of Tanzania. annabelitaeli@outlook.com.
Systematic reviews
|December 20, 2025
概括
抗生素的使用显著减少了超过一半的细菌培养产量,影响了病原体的识别. 这强调了采样时间对于准确的诊断结果至关重要.
科学领域:
- 微生物学与传染病的研究
- 临床诊断 临床诊断 临床诊断
- 证据综合 证据综合
背景情况:
- 细菌培养对于病原体识别和抗菌素敏感性测试至关重要.
- 以前使用抗生素可能会损害培养精度,导致假阴性结果.
- 现有研究显示了这种变异性,因此需要对抗生素对培养产量的影响进行系统审查.
研究的目的:
- 系统地审查和量化抗生素管理对细菌培养产量的影响.
- 评估抗生素对临床样本中可活生物体恢复的影响.
主要方法:
- 在PubMed,Embase,Scopus和Web of Science中进行全面的电子文献搜索.
- 使用纽卡斯尔-太华尺度进行方法性质量评估.
- 随机效应元分析以估计聚合比例和95%置信区间 (CI).
主要成果:
- 包括11项研究,包括67,330个样本.
- 聚合的细菌生长比例从抗生素服用前的37% (95% CI 20-56%) 下降到服用后的18% (95% CI 10-29%).
- 在研究中观察到显著的异质性 (I2 = 99.8%).
结论:
- 抗生素的使用明显抑制了细菌的生长,使培养产量减少了50%以上.
- 相对于开始服用抗生素,取样时间对于诊断准确性至关重要.
- 抗生素后采样可能有助于在选择的临床场景中监测预后和治疗指导.
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